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Process integration analysis and some economic-environmental implications for an innovative environmentally friendly recovery and pre-treatment of steel scrap
Scuola Superiore Sant’Anna, Italy.
Scuola Superiore Sant’Anna, Italy.
Scuola Superiore Sant’Anna, Italy.
Scuola Superiore Sant’Anna, Italy.
Vise andre og tillknytning
2016 (engelsk)Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 161, s. 656-672Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The use of Zinc-coated steel (e.g. galvanized steel) in melting cycles based on Electric Arc Furnaces can increase the production of harmful dust and hazardous air emissions. This article describes a novel process to simultaneously preheat and remove the coating from the scrap surface before the melting phase. The zinc in coating is removed in the gas phase by chloride containing syngas combustion and collected in a dedicated recovery system. Two possible innovative process routes are described, which involve plastic waste pre-treatment, shredded plastic gasification/pyrolysis, steel scrap preheating and zinc recovery processes. The routes have been modeled in an integrated flowsheet, in order to allow a comprehensive simulation and optimization of the pretreatment processes. The process optimization results in possible energy savings of over 300 MJ/t of preheated scrap charged in the Electric Arc Furnace for steel production. Moreover, a comparison among different scenarios according to economic and environmental criteria has been carried out. 

sted, utgiver, år, opplag, sider
Elsevier Ltd , 2016. Vol. 161, s. 656-672
Emneord [en]
Electric Arc Furnace, Environmental sustainability, Process integration, Process modeling, Steel scrap preheating, Coatings, Electric arcs, Electric furnace process, Electric furnaces, Energy conservation, Furnaces, Galvanizing, Melting, Optimization, Particulate emissions, Plastic coatings, Preheating, Recovery, Steelmaking, Steelmaking furnaces, Sustainable development, Waste incineration, Waste treatment, Zinc, Zinc chloride, Zinc coatings, Zinc scrap, Scrap preheating, Steel scrap, air quality, combustion, dust, electronic equipment, emission, environmental economics, innovation, pyrolysis, steel, sustainability
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Identifikatorer
URN: urn:nbn:se:ri:diva-41089DOI: 10.1016/j.apenergy.2015.08.086Scopus ID: 2-s2.0-84946869667OAI: oai:DiVA.org:ri-41089DiVA, id: diva2:1377204
Merknad

Funding text 1: The work described in the present paper was developed within the project entitled “Processes and technologies for environmentally friendly recovery and treatment of scrap” (Contract No. RFSR-CT-2010-00004) and has received funding from the Research Fund for Coal and Steel of the European Union, which is gratefully acknowledged. The sole responsibility of the issues treated in the present paper lies with the authors; the Union is not responsible for any use that may be made of the information contained therein. The authors would like to acknowledge gratefully the support of the European Community. Appendix A

Tilgjengelig fra: 2019-12-11 Laget: 2019-12-11 Sist oppdatert: 2020-12-01bibliografisk kontrollert

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